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Nanoscale Sensing

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".

Deadline for manuscript submissions: closed (10 December 2023) | Viewed by 1342

Special Issue Editor


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Guest Editor
School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
Interests: analytical chemistry; single cell analysis; biochemistry; biosensors; nanoprobes; machine learning

Special Issue Information

Dear Colleagues,

Recently, nanoscale sensing based on nanomaterials and nanotechniques has attracted growing interest due to its important role in improving detection sensitivity and selectivity. This Special Issue, entitled “Nanoscale Sensing”, is devoted to highlighting emerging research on nanoscale sensors and analytical techniques. Research papers with new results or reviews of nanoscale sensing and their related applications are particularly welcome in this Special Issue. Authors are encouraged to submit, in as much detail as possible, experimental and theoretical results of their research on this topic and/or their applications to (but not limited to) nanosensors, biosensors combined with nanoparticles, nanoelectrodes, nanoenzymes, and other nanomaterials. In addition, authors who are working on machine-learning-guided analytical strategies are encouraged to submit research papers.

Both review articles and original research papers in the following areas are encouraged, although they need not be limited to these:

  • New concepts of developing nanomaterials-based sensors;
  • The design of new nanomaterials for sensing applications;
  • Emerging applications of gold nanomaterials in various fields;
  • The fabrication of custom-made nanoscale sensors;
  • The application of bioelectrochemistry based on nanoelectrodes;
  • The development of nanomaterial-based instruments for sensing applications.

Dr. Ruocan Qian
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nanosensors
  • biosensors
  • nanomaterials
  • biosensors
  • biomarkers
  • bioimaging
  • DNA based
  • nanosensing
  • biomedical nanoprobes
  • bioelectrochemistry
  • machine learning

Published Papers (1 paper)

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Research

15 pages, 3400 KiB  
Communication
Pb2+ Ion Sensors Employing Gold Etching Process: Comparative Investigation on Au Nanorods and Au Nanotriangles
by Eun Jin Park and Tai Hwan Ha
Sensors 2024, 24(2), 497; https://doi.org/10.3390/s24020497 - 13 Jan 2024
Viewed by 832
Abstract
The leaching phenomenon of gold (Au) nanomaterials by Pb2+ ions in the presence of 2-mercaptoethanol (2-ME) and thiosulfate (S2O32− ion) has been systematically applied to a Pb2+ ion sensor. To further investigate the role of Pb2+ [...] Read more.
The leaching phenomenon of gold (Au) nanomaterials by Pb2+ ions in the presence of 2-mercaptoethanol (2-ME) and thiosulfate (S2O32− ion) has been systematically applied to a Pb2+ ion sensor. To further investigate the role of Pb2+ ions in sensors containing Au nanomaterials, we revisited the leaching conditions for Au nanorods and compared them with the results for Au nanotriangles. By monitoring the etching rate, it was revealed that Pb2+ ions were important for the acceleration of the etching rate mainly driven by 2-ME and S2O32− pairs, and nanomolar detection of Pb2+ ions were shown to be promoted through this catalytic effect. Using the etchant, the overall size of the Au nanorods decreased but showed an unusual red-shift in UV-Vis spectrum indicating increase of aspect ratio. Indeed, the length of Au nanorods decreased by 9.4% with the width decreasing by 17.4% over a 30-min reaction time. On the other hand, the Au nanotriangles with both flat sides surrounded mostly by dense Au{111} planes showed ordinary blue-shift in UV-Vis spectrum as the length of one side was reduced by 21.3%. By observing the changes in the two types of Au nanomaterials, we inferred that there was facet-dependent alloy formation with lead, and this difference resulted in Au nanotriangles showing good sensitivity, but lower detection limits compared to the Au nanorods. Full article
(This article belongs to the Special Issue Nanoscale Sensing)
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